Instructables
Picture of Making an Electro Card using Bare Paint!
In this tutorial Bare Conductive will show you how to make a light-up greeting cards with LEDs! To do this we will use some Bare Paint, a battery and some standard, flashing and surface-mount LEDs.

To help you complete this project we've made all the components available in a Kit which you can buy at our online shop. Just select the Greeting Card Kit. Alternatively you can source the necessary components yourself through Farnell or Digi-Key!
 
Remove these adsRemove these ads by Signing Up

Step 1: What You Will Need

Picture of What You Will Need
Materials

Bare Paint or Bare Paint Pen
Paintbrush
A4 Coloured Paper - You can download the templates HERE
Scissors / Craft Knife
Wire snippers
Needle-nose Pliers
Glue Stick
Cutting Mat (if using knife)
Ruler

Components - We've included the links to where you can buy some of the components in case you want to purchase them individually

Standard LEDs - Digi-Key
3V Coin Cell Battery - Digi-Key

Step 2: STEP 1. Download and Print your Templates


In this tutorial we will show you how to paint a circuit with either a brush or a Bare Paint Pen. We will be making the blinking robot card and the mother's day card but you can use these instructions to make lots of other card designs too - download the PDF for the Robot cards below.



Step 3: STEP 2. Make card body

Picture of STEP 2. Make card body

Print your template onto coloured piece A4 paper. Cut along the cutting lines and fold along the folding lines. Keep cut off bits for later. If you are a little person please be careful and ask a parent or teacher to help you with the cutting.

Step 4: STEP 3. Paint your circuit

Picture of STEP 3. Paint your circuit
IMG_5292.JPG
Using a paint brush, carefully trace around the printed black line on the template with Bare Paint. Make sure your line is fairly thick and a consistant width (about 3mm).

Or… if you have a Bare Paint pen you can trace around the circuit with your pen.
poofrabbit2 years ago
This is great I had no idea a paint like this existed, you have my wheels spinning! 5 Stars!
ChrysN2 years ago
Nice! I like the robot with the heart.
extraslice2 years ago
How much in total should this cost to make?
BareConductive (author)  extraslice2 years ago
I would imagine that making one card including the battery and LEDs would be around $6.00. The most expensive part would be the conductive paint.

We sell a kit for around $20.00 at http://www.bareconductive.com/store which has enough components to make 3 cards, and comes with a conductive paint pen which should last you for many more projects/cards.
WrshpMzshn2 years ago
Also, how many LEDs can run off a single battery? If, for instance, I want to run 12 LEDs, what would I need for a battery? And is it better to run them in series or parallel?
BareConductive (author)  WrshpMzshn2 years ago

The battery we suggest is 3V and we've tested it with up to 3 LEDs however, this depends on the LED and the length of the circuit you draw.

For the ones we're using if you wanted to light 12 LEDs you'd probably need between 3 to 4 batteries!
WrshpMzshn2 years ago
Instead of a switch, could I just leave a gap in a Bare Paint line and bridge it with my thumb to close the circuit?
BareConductive (author)  WrshpMzshn2 years ago
You could, though your thumb by itself is probably not conductive enough for the current to flow through. However, if you put some paint on it it may work!

:)
rimar20002 years ago
Interestingly, you can make a keychain flashlight with this technique.